<footer class="g-footer">
  <section>{{ site.title }} ©
  {% assign current = "now" | date: "%Y" | plus: 0%}
  {% unless site.footer.since and site.footer.since == current %}
    {{ site.footer.since }}
    -
  {% endunless %}
  {{ current }}
  </section>
  <section>Powered by <a href="//jekyllrb.com">Jekyll</a> | <a href="https://github.com/kaeyleo/jekyll-theme-H2O">Theme H2O</a></section>
</footer>
